Knife and pencil sharpener.



No. 70mm. Pa tenfed Aug. I9 1902.

L. JOHNSON. KNIFE AND PENCIL SHARPENEB.

(Application filed Dec. '18, 1901.)

(No Model.)

WITNESSES m AT-TORNEY.

n4: mums mins 00.. PHoTo uTnm, WASHINGTON, a. Q

flange to receive screws for securing the machine firmly. in position ona disk or table. At one side of post 1 projects a pin, upon- 7 UNITEDSTATES PATENT O FICE.

LEN'soN JoI-INsoN, or CHICAGO, ILLINOIS. V

KNIFE AND PENCIL SHARPENERQ srncrrroerronr rmi part of, Letters PatentNo. 707, 1 iau teaeugust is, 1902.

' Application filed December 18, 1901. Serial No. 86,391. (No modeld Toall whom it may concern: Be it known that I, LENSON JOHNSON, a citizenof the United States, residing at Chicago, in the county of Gook'andState of Illinois, have invented a new'and useful Knife and PencilSharpener, of which the following is a specification. Y

My invention relates to combined tools for grindingknives,sharpeningpeucils,and other similar purposes; and my object is toprovide an inexpensive and. very desirable device adapted to the use ofdraftsmen, writers, bookkeepers, or others who use knife erasers andwhose pencilsion account of continued use require frequent sharpening,the same being fully described hereinafter and illustrated in theaccompanying drawings, in which- Figures 1 and 2 are respectively frontand rear elevations of a machine in which is embodied my improvements.Fig. 3 is a side elevation looking into the large end of thepencilholder. Fig. 4 shows, respectively, a side and a front elevationof the vtop portion of the supporting-post to plainly illustrate thescrewthreaded part of a journal-box in which the grindingwheel shaft ismounted. Fig. 5 shows, respectively, a rear and a side elevation of thepencil-holder, whose boss is internally screw-threaded, to register withthe screw-threads on the outside of the journalbox shown in Fig; 4.

Similar numerals indicate like parts throughout the several views.

The post 1 is provided with a broad basewhich is revolubly mountedtheinternal crank gear-wheel 2, which hasa crank-pin 3. There is ahorizontallyrdisposedjournal-box 4 at the top of post 1 in which boxismounted shaft 5, and at one end of the latter is secured a small pinion6, which gears with cog-wheel 2, as shown in Fig. 1. At the opposite endof shaft 5 from; pinion. 6 are flanges between which are secured agrindstone 7 and a rotary cutter 8, the g'rindstone serving to sharpensmall tools, while the rotary cutter is adapted to sharpen pencils,which are held in position to insure the proper taper by being insertedinto the conical holder 9.

10, which is" interiorly screw threaded, as before stated, and is splitat one side,jthe adjacent split portions being .held together by abinding-screw l l=to clamp the holder on the The pencil-holderisprovided with a boss screw-threaded portion '12'ofjournal-box 4, r

so that the holderf-by being revolved on the box may be quickly adjustedto the proper position relative to the'rotary cutter, so that the pencil.maybe dressed to either a blunt or sharp point, as maybe necessary. Thepencil-holder may be clamped in position to easily turnupon the journalbox, so that the pencil'serving as a levermay be used to turn the holderto any positionfrom that shown or may be firmly clamped in positionshould but one size of point be desired. On account of the pencil-holderbeing cut away tangentially at one side 13 intothe tapering hole thereofoneside of thepencil when inserted in the holder projects outwardlywithin reach of the revolving teeth of the rotary cutter, when it isobvious th'at'if the pencil is slowly revolved by the fingers'it will'becut to the desired conical form. The screw-threads on the j ournal-boxalways prevent the holder, when not being revolved, from any movementeither to or from the rotary cutter, so that with any given relativeposition'of the holder the same size of point may bealways produced.

I claim asmy invention'" 1. A combined knife and pencil sharpener,consisting of a journal-box, a revoluble shaft,

a rotary cutter and a grindstone mounted on the shaft whichlatter'ismounted in the journal-box, a hollow pencil-holder, alongitudinal opening into the hollow portion of said holder, a bossattached to said holder and the said boss attached to the journal-box,and s0 disposed that the longitudinal opening in the pencil-holder isclose to the rotary cutter, substantially as and for the purpose stated.

2. A combined knife and pencil sharpener consisting of a journal-boxhaving a portion thereof exteriorly screw-threaded, a revoluble shaft, arotary cutter and a grindstone, the cutter and grindstone mounted on theshaft and the latter mounted in-the journalbox, a hollow pencilholder, alongitudinal opening into one side of said holder and ex posing thehollow portion thereof, a hollow boss interiorly screw-threaded andattached to the holder, said boss mounted on the screwthreaded portionof the journal-box with the longitudinal opening in the holder close tothe rotary cutter, and means for revolving the shaft, substantially asstated.

3. In a combined knife and pencil sharpener, a supporting-post having ajournal-box mounted thereon, a revoluble shaft mounted in thejournal-box, a grindstone and a rotary cutter mounted on one end of theshaft and a pinion cog-wheel mounted on the other end thereof, a pinmounted on the supporting-post, an internal cog-Wheel revolubly mountedon the pin and in engagement with

